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. 2011 Jul 14;7(7):e1002087. doi: 10.1371/journal.pcbi.1002087

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Honda et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Conventions are as in Fig. 2. When a small current was injected, the Gocs elicited spikes at high frequencies (B), which in turn strongly inhibited the grcs. Consequently, the generation of oscillatory spikes at grcs disappeared (C). The absence of the oscillation was demonstrated by the sharp peak of NAC(τ) at τ = 0 (D). The overlap of active grc populations decreased rapidly with the separation of time (F). When a large current was injected, the Gocs also fired at high frequencies, too (B). In this case, however, the populations of active grcs exhibited random alternation between the burst and silent modes although the grcs elicited spikes sparsely (C, compared with Fig. 2C ). This random spike pattern was demonstrated by the sharply localized peak of NAC(τ) at τ = 0 and otherwise, NAC(τ) ≈0, as shown in E. monotonically decreased as |τ| increased (G), indicating that the population of active grcs changed gradually to different populations with time without recurrence.

Inline graphic — Conventions are as in Fig. 2. When a small current was injected, the Gocs elicited spikes at high frequencies (B), which in turn strongly inhibited the grcs. Consequently, the generation of oscillatory spikes at grcs disappeared (C). The absence of the oscillation was demonstrated by the sharp peak of NAC(τ) at τ = 0 (D). The overlap of active grc populations decreased rapidly with the separation of time (F). When a large current was injected, the Gocs also fired at high frequencies, too (B). In this case, however, the populations of active grcs exhibited random alternation between the burst and silent modes although the grcs elicited spikes sparsely (C, compared with Fig. 2C ). This random spike pattern was demonstrated by the sharply localized peak of NAC(τ) at τ = 0 and otherwise, NAC(τ) ≈0, as shown in E. monotonically decreased as |τ| increased (G), indicating that the population of active grcs changed gradually to different populations with time without recurrence.